Is this memory ECC or Non-ECC: What specifically is this memory?
18307
Just installed - PC recognizes as ECC - on my 8250 it does specify non-ECC - seems to work fine, does it matter?
255486
I don't think so. The memory that I bought was for server, which has "error correction" feature (ECC). Optiplex 755 should use just regular desktop DDR2 memory (example like this http://www.amazon.com/Komputerbay-800MHz-PC2-6300-PC2-6400-Desktop/dp/B004LT6O56/ref=sr_1_4?s=electronics&ie;=UTF8&qid;=1431600736&sr;=1-4)
742439
Yes, this is only a single stick of DDR2 ECC FB-DIMM. Use only if you know what this means. Not for desktops.
255485
No this memory is ECC Fully Buffered. You need Non-ECC memory. Here is the correct memory for you system: http://www.amazon.com/This-computer-support-http-Optiplex-755-3-33GHZ-Windows-DVD-BURNER/forum/Fx6DD3T5B9E9UX/TxR5UGPXN4Y13D/1?_encoding=UTF8&asin;=B00332E4UE&authToken;=2461793b-1853-4fac-b899-d740d809224e&cdEmailView;=A3LKWIQ3PBTNT2&cdHideAnswers;=1&cdHideBuyBox;=1&cdShowAnswer;=1&redirect;=true No this memory is ECC Fully Buffered. You need Non-ECC memory. Here is the correct memory for you system: http://www.amazon.com/This-computer-support-http-Optiplex-755-3-33GHZ-Windows-DVD-BURNER/forum/Fx6DD3T5B9E9UX/TxR5UGPXN4Y13D/1?_encoding=UTF8&asin;=B00332E4UE&authToken;=2461793b-1853-4fac-b8... » Read More No this memory is ECC Fully Buffered. You need Non-ECC memory. Here is the correct memory for you system: http://www.amazon.com/This-computer-support-http-Optiplex-755-3-33GHZ-Windows-DVD-BURNER/forum/Fx6DD3T5B9E9UX/TxR5UGPXN4Y13D/1?_encoding=UTF8&asin;=B00332E4UE&authToken;=2461793b-1853-4fac-b899-d740d809224e&cdEmailView;=A3LKWIQ3PBTNT2&cdHideAnswers;=1&cdHideBuyBox;=1&cdShowAnswer;=1&redirect;=true « Show Less
776748
I think you need:CT3265269 - 2GB DDR2 PC2-5300 Unbuffered NON-ECC 1.8V 256Meg x 64 $35.99 for your Mac. But here is the link to Crucial to verify for your model. http://www.crucial.com/usa/en/?gclid=CP6nxoHd_r4CFQpefgoda0YAaQ&cm_mmc=google-_-us-_-dram-_-null&ef_id=U58PXQAABSyt981O:20140616153805:s
257264
I'm an end user so I have no idea. I think the vendor's website has the correct correspondence of machine to memory. It not, try Googling the memory for that machine.
455127
Yes, I can confirm the above specs on this memory. It's the only reason I paid so much for this stuff. Many memory claim to have specs like this, but this one actually delivered. On my Asus motherboard, some other memory, when put into XMP memory mode would give me a message that it failed to "Overclock". But this one has never given me that message. All the memory testing utilities show the voltage and timings to be these specs. It's the real deal. Enjoy.
2125533
No. This computer comes with non-ECC low density PC3-10600U (1333Hz) memory.
2075061
Yup - DDR3 memory. Read through the reviews to see what memory others have used.
1810216
From the manufacturer's website: http://www.ecsusa.com/ECSWebSite/Product/Product_Detail.aspx?DetailID=1497&CategoryID=1&DetailName=Feature&MenuID=106&LanID=0 Storage Support by AMD Kabini Express Chipset 2 X Serial ATAIII 6Gb/s
1941958
I found the information on the wrong memory I ordered. It is the same description as the one you are looking at with one exception; it is sold by a different company. Point out the error in the description to Amazon and they should give you a full refund including shipping. They did me. That is, if your computer is listed in the description.
74766
I don't think so. The memory that I bought was for server, which has "error correction" feature (ECC). Optiplex 755 should use just regular desktop DDR2 memory (example like this http://www.amazon.com/Komputerbay-800MHz-PC2-6300-PC2-6400-Desktop/dp/B004LT6O56/ref=sr_1_4?s=electronics&ie=UTF8&qid=1431600736&sr=1-4)
1234875
Sounds like you ether mixed the type of memory and your system does not allow this ECC and Non-ECC or you are using the wrong combination of slots or wrong memory for your MoBo
229611
Without knowing what you want to use them in, it's not possible to answer your question. Let us know if the memory specification of the computer/motherboard lists the voltage and timing requirements for the memory, and if it will accept ECC, only non-ECC, or allows for a mix of ECC and non-ECC (error checking and correction).
1481565
Memory: 8 x Dimm, Max 64GB, DDR3 2800[O.C.]/2400[O.C.],/2133[O.C.],/1800/1600/1333/1066 MHz, non-ECC un-buffered memory.*Refer to www.asus.com for the memory QVL [Qualified Venders List].
1698121
Yes, it is. I have the same memory, but 64 GB of it in my machine. Good luck and have fun!
2019196
If I'm not wrong, ECC memory has a self-correction mechanism to retrive data from the memory due to electromagnetic interference. Since the newer generation of memory is more reliable, the newer generation of Macs use only non-ECC version. So if you have Mac Pro 4.1 or 5.1, for example, you must install a non-ECC version of memory, which is faster and propbably cheaper.Hope this amswers your question.